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2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)最新文献

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Design of 8-port Cross-Slot Antennas for WRC 5G C-Band MIMO Access Point Applications WRC 5G c波段MIMO接入点应用的8端口交叉槽天线设计
2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237426
Wen‐Shan Chen, Yung-Chi Lin, Kuan-Hua Huang
{"title":"Design of 8-port Cross-Slot Antennas for WRC 5G C-Band MIMO Access Point Applications","authors":"Wen‐Shan Chen, Yung-Chi Lin, Kuan-Hua Huang","doi":"10.1109/iWEM49354.2020.9237426","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237426","url":null,"abstract":"The paper presents a design of cross-slot antenna array for WRC 5G C-Band MIMO access point applications is proposed. The overall size of the design is 97.6 mm x 97.6 mm x 10.2 mm. It consists of four cross-slot antennas are excited orthogonally. There are 8 ports for the design. The antennas are excited by microstrip-lines and arranged orthogonally. Eight slits are embedded on the ground plane to enhance isolation effect. From the results, the bandwidth and the isolation performances are all meet the requirement of WRC 5G C-band MIMO applications. The measured antenna gain is from 4-6dBi. The design with good performances is a good candidate of MIMO access point application on WRC 5G C-band.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124953443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modifying the Windings of HFCT Restrain Magnetic Saturation and Harmonics Interference 对高频互感器绕组的改进抑制了磁饱和和谐波干扰
2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237449
Jiann-Fuh Chen, Yung-Jui Hsu, Yu-Hsun Lin
{"title":"Modifying the Windings of HFCT Restrain Magnetic Saturation and Harmonics Interference","authors":"Jiann-Fuh Chen, Yung-Jui Hsu, Yu-Hsun Lin","doi":"10.1109/iWEM49354.2020.9237449","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237449","url":null,"abstract":"The ferrite core design for HFCT sensor uses the small signal current sampling as the basis. The non-linear loads, such as system unbalance or interphase ground fault, produces considerable harmonic induction, thus leading to magnetic saturation of the ferrite core. The aliasing of high and low frequency signals distorts the extracted waveform or damages the HFCT. To address the above problem, this study used sensors to improve two sets of windings, whereby the forward winding and backward winding were connected in series in the coil position. As the low frequency signal neutralized the increase of induced potential through the backward winding loop path, the low frequency response hazard generated was reduced by a low frequency signal. The experimental results showed that the unmodified sensor correlation coefficient quantized value R=0.94137 was positively correlated, which validates the excellent ability to suppress magnetic saturation and harmonic interference.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125153714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Near Field Co-Planar Phase-less Measurement for Patch Array Antenna 贴片阵列天线近场共面无相测量
2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237428
Kusunose Kyosuke, Arai Hiroyuki
{"title":"Near Field Co-Planar Phase-less Measurement for Patch Array Antenna","authors":"Kusunose Kyosuke, Arai Hiroyuki","doi":"10.1109/iWEM49354.2020.9237428","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237428","url":null,"abstract":"This paper presents a simple, quick and compact measurement system to evaluate patch array antenna. In this system, we focus on phase-less, and co-planar measurement. This near field co-planar measurement is effective for 5G terminal application.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121397027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
High-resolution Indoor Human detection by Using Millimeter-Wave MIMO Radar 基于毫米波MIMO雷达的室内高分辨率人体检测
2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iwem49354.2020.9237397
H. Yamada, T. Horiuchi
{"title":"High-resolution Indoor Human detection by Using Millimeter-Wave MIMO Radar","authors":"H. Yamada, T. Horiuchi","doi":"10.1109/iwem49354.2020.9237397","DOIUrl":"https://doi.org/10.1109/iwem49354.2020.9237397","url":null,"abstract":"Millimeter wave radar becomes very popular recently. Application of the radar is not only automotive radar but also human detection and man-machine interface, so forth. The radar often has superior resolution in range. However angular resolution improvement is often required. In this report, we propose virtual array technique by using so-called Khatri-Rao matrix product transform for the MIMO radar. Experimental results of indoor human detection is provided to show the validity of the technique.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123076253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A 5G / WiFi MIMO Antenna with Dual-band Operation in a small cell device 小型蜂窝设备中具有双频操作的5G / WiFi MIMO天线
2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237432
Jui-Han Lu, Wei-Ren Chuang, Bo-Ming Chen
{"title":"A 5G / WiFi MIMO Antenna with Dual-band Operation in a small cell device","authors":"Jui-Han Lu, Wei-Ren Chuang, Bo-Ming Chen","doi":"10.1109/iWEM49354.2020.9237432","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237432","url":null,"abstract":"A novel dual-band 8 × 8 multi-input multi-output (MIMO) antenna for a 5G / Wi-Fi small cell is proposed. The impedance bandwidths across the operating bands can meet the bandwidth specification of the 5G / Wi-Fi bands, respectively. The measured peak gains and antenna efficiencies are close to 3.0 / 2.0 dBi and 80 / 60 % across 2.4 / 5 GHz bands, respectively.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"13 24","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120824601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Thin Cylindrical Cloak by Controlling Arrangement Density of Multi-Layer Ceramic Capacitors 控制多层陶瓷电容器排列密度的薄圆柱形斗篷
2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237404
T. Nguyen, N. Michishita, H. Morishita, T. Miyazaki, M. Tadokoro
{"title":"Thin Cylindrical Cloak by Controlling Arrangement Density of Multi-Layer Ceramic Capacitors","authors":"T. Nguyen, N. Michishita, H. Morishita, T. Miyazaki, M. Tadokoro","doi":"10.1109/iWEM49354.2020.9237404","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237404","url":null,"abstract":"In this paper, the thin cylindrical cloak by controlling arrangement density of multi-layer ceramic capacitors (MLCCs) is proposed. The unit cell is designed by locating MLCC between two dielectric substrates. By adjusting the period length of the unit cell, it confirms that the effective permeability of the unit cell can be controlled, and the thin cylindrical cloak can be designed with only one type of MLCC.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122529506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Non-invasively Active Near-field Probe Antenna Design for Subcutaneous Temperature Measurement 用于皮下温度测量的无创主动近场探针天线设计
2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237430
Bo Hua Lin, C. Chiu
{"title":"Non-invasively Active Near-field Probe Antenna Design for Subcutaneous Temperature Measurement","authors":"Bo Hua Lin, C. Chiu","doi":"10.1109/iWEM49354.2020.9237430","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237430","url":null,"abstract":"The aim of this study is to develop an active near-field probe antenna for noninvasive temperature measurement of subcutaneous muscles. The active part is a low noise amplifier designed using ATF-54143 HEMT device placed on one side of the ground plane. A planar-type patch placed on the other side of the ground plane was designed in the 1.575 GHz GPS band to receive the thermal radiation power that emanates from inside a human body to retrieve temperature information. The designed active antenna is pasted on the skin for probing the radiated power from the subcutaneous muscles of human body. Agar material was developed to fabricate a phantom model to replicate electrical characteristics of a human body during testing. This addition of the LNA can achieve gain 13 dB and noise figure less than 1 dB. The study demonstrates using the active probe connected to the radiometer can predict the output voltage of the different temperature inside the body.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125805522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Fully-integrated Capacitive Cross-Coupled Class-D Oscillator with Frequency Doubler 带倍频器的全集成电容交叉耦合d类振荡器
2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237403
Ho‐Chang Lee, S. Jang, Yu-Chi Wang
{"title":"Fully-integrated Capacitive Cross-Coupled Class-D Oscillator with Frequency Doubler","authors":"Ho‐Chang Lee, S. Jang, Yu-Chi Wang","doi":"10.1109/iWEM49354.2020.9237403","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237403","url":null,"abstract":"This letter designs a class-D oscillator with frequency doubler implemented in the TSMC standard 0.18 µm BiCMOS processes. The die area is 1x1 mm2. At the supply voltage of 0.4 V below the nominal threshold voltage, the n-core oscillator outputs a frequency source at 2.80 GHz. This class-D oscillator with frequency doubler is made of a parallel LC resonator and a capacitive cross-coupled MOSFET pair with inductive gate voltage booting, which enables the class-D mode operation by switching the FETs to deep cut-off region in shorter time.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121296818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Low-profile Omnidirectional Dielectric Resonator Antenna with Enhanced Bandwidth 增强带宽的低轮廓全向介质谐振器天线
2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237440
Wenhui Deng, S. Zheng
{"title":"A Low-profile Omnidirectional Dielectric Resonator Antenna with Enhanced Bandwidth","authors":"Wenhui Deng, S. Zheng","doi":"10.1109/iWEM49354.2020.9237440","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237440","url":null,"abstract":"Antennas dedicated for certain radar and wireless communication applications are required to have a low profile. Dielectric resonator has been widely used to implement different types of antennas due to its unique advantages. Whereas, the contradiction between the low profile and narrow bandwidth limits its application scope. A low-profile omnidirectional vertically-polarized (VP) DRA with shorted metal vias is proposed for bandwidth enhancement in this paper. The proposed DRA is centrally fed by a coaxial probe, exhibiting omnidirectional patterns at 2.4 GHz WLAN band. With the introduction of metal vias, $TM_{02delta}$ mode of DRA moves to the vicinity of TM01δ mode, thus expanding the bandwidth. The antenna features a 10-dB impedance bandwidth of 8.9% (2.37-2.59 GHz) at its center frequency 2.48 GHz and a low profile of $0.093lambda_{0}$. Within the whole WLAN band (2.4-2.48 GHz), the realized antenna maintains a stable gain of around 1.8-dBi in the horizontal direction.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124770192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Compact and Broadband Rectifier for Ambient Electromagnetic Energy Harvesting Application 一种用于环境电磁能量收集的小型宽带整流器
2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237444
Baihua Zeng, S. Zheng
{"title":"A Compact and Broadband Rectifier for Ambient Electromagnetic Energy Harvesting Application","authors":"Baihua Zeng, S. Zheng","doi":"10.1109/iWEM49354.2020.9237444","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237444","url":null,"abstract":"To collect as much electromagnetic energy from the environment as possible, the corresponding antenna and rectifier are required to have a wide bandwidth. However, the existing broadband rectifiers either have the complex structure or bulky size. To solve these problems, a new broadband rectifier configuration is proposed. A coupled line section and a shorted stub are introduced in a voltage double configuration to guide the harmonic components back to the input for efficiency enhancement at the higher frequency. Subsequently, the bandwidth can be extended. For validation, a wideband rectifier based on Schottky diode SMS7630 had been designed, fabricated and measured. The conversion efficiency of the implemented rectifier is higher than 40% over a relative bandwidth of 110% from 0.9 GHz to 3.1 GHz at the input power level of 0 dBm. Compared with state-of-the-art broadband configurations, the implemented rectifier achieved a wider bandwidth maintaining a compact size.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124916557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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